摘要
通过对预应力FRP增强竹木集成材的抗弯实验,研究了不同预应力FRP对集成材抗弯强度、弹性模量及中性轴的影响,实验结果表明:在预应力FRP增强竹木集成材中,30%UTS预应力FRP增强竹木集成材的抗弯强度、弹性模量及中性轴偏移最大,抗弯强度达到73.05 MPa,弹性模量7312.80 MPa,相对于无预应力FRP增强的竹木集成材中性轴向下偏移1.73 mm。并且集成材在一次破坏后,30%UTS、40%UTS预应力FRP增强竹木集成材承受荷载仅分别下降11%,18%,而无预应力FRP增强竹木集成材则急剧下降46.80%。
According tobending experiments of wood-bamboo structuralglulam reinforced by prestressed FRP, the influence of prestressed FRP on bending strength, elastic modulus and the neutral axis was studied. The experimental results are as follows： bending strength, elastic modulus and the shift of neutral axis of wood-bamboo structuralglulam reinforced by prestressed FRP with 30% of ultimate tensile strength（UTS） are most. In addition,they are respectively 73.05MPa, 7312.80MPa, 1.73mm compared with gulam with no prestressing. What＇ s more, after the first destruction, the load of wood-bamboo structuralglulam reinforced by prestressed FRP with 30% ,40% of UTS respectively declines 11%, 18% instead of 46.80% of glulam with no prestressing.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2016年第4期116-119,共4页
Journal of Central South University of Forestry & Technology
基金
国家林业局引进国际先进林业科学技术计划(“948”计划)项目“高强度纤维增强木质复合材料制造技术引进”(2012-4-20)
